I slid my saturn sl2 into a curb pretty hard, what could be messed up?

I have worked on several Saturn that have hit a curb and found the most common problem is the frame where the lower control arm is connected to the frame is bent causing the vehicle to need a new sub frame, If you OK the repair from sears be sure to get it in writing that if this don't fix the problem you don't pay for any repair, tell the service personal you want to check the drivability first before you pay. Be sure it drives a straight line for at least 1/2 mile with hands off wheel on a flat road at 30 mph, be safe and ready to grab the steering wheel in-case it veers right or left, if it veers then the alignment is off and the repair was wrong. The thing you said needed to replace sounds like things that would need repair because of the hit anyway but the true cause is likely the frame and should be checked for bent spots where the lower control is connected to the frame. Good Luck and God Bless